*{
    margin: 0;
    padding: 0;
    list-style: none;
    box-sizing: border-box;
}
html,body,#box{
    width: 100%;
    height: 100%;
}
header{
    width: 100%;
    height: 50px;
    background-color: rgb(255, 175, 175);
}
#box{
    width: 100%;
    height:547px;
    overflow: auto;
}
#box dl{
    width: 50%;
    height: 250px;
    float: left;
}
#box dl dt{
    text-align: center;
}
#box dl dt img{
    width: 150px;
    height: 150px;
}
#box dl dd:nth-of-type(2){
    color: red;
}
footer{
    width: 100%;
    height: 70px;
    background-color: rgb(255, 175, 175);
}